Improve debug logging of classes for 77342775.

Log the reference, space and defining dex file of the
source and target class.

Log the start of image space and replace image space
file name with '+' if it's the same as the image name.

Test: Manual; change 108-check-cast to multi-dex and disable
      the Lorg/apache/http/ filtering, check error message.
      Repeat with a profile to put LB; and LD; into app image.
Bug: 77342775

(cherry picked from commit cbb7bd27)

Change-Id: Iee935c463816fff50510371c4d8acb1807980039